Personalis executive exercises options, sells 100K shares

Personalis, Inc. President and CMO Richard Chen reported an exercise-and-sale transaction in the company’s common stock.

Rhea-AI Filing Summary

Personalis, Inc. President and CMO Richard Chen reported an exercise-and-sale transaction in the company’s common stock. He exercised stock options for 100,000 shares at an exercise price of $2.44 per share and sold 100,000 shares in open-market transactions at a weighted average price of $15.15 per share, within a price range of $15.01 to $15.45 per share, pursuant to a Rule 10b5-1 trading plan adopted on December 23, 2025. Following these transactions, Chen holds 173,880 shares of Personalis common stock directly, and the exercised option grant is fully used.

Insider Trade Summary 10b5-1

Exercise and Sale: 100,000 shares ($1.27M approx. pre-tax spread)

Exercise and Sale 3 txns

Insider Chen Richard

Role President and CMO

Sold 100,000 shs ($1.51M)

Approx. gross sale proceeds $1.51M

Approx. exercise cost $244K

Approx. pre-tax spread $1.27M

Type	Security	Shares	Price	Value
Exercise	Stock Option (right to buy) F1, F3	100,000	$0.00	$0.00
Exercise	Common Stock F1	100,000	$2.44	$244K
Sale	Common Stock F1, F2	100,000	$15.15	$1.51M

Holdings After Transaction: Stock Option (right to buy) — 0 contracts (Direct); Common Stock — 173,880 shares (Direct)

Footnotes (3)

1. F1. The sales and option exercise reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 23, 2025.
2. F2. The price reported above reflects the weighted average price of the shares sold. The sale price ranged from $15.01 to $15.45 per share. Upon request from the SEC staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.
3. F3. The shares subject to the option are fully vested and exercisable.

Key Figures

Shares sold: 100,000 shares Weighted average sale price: $15.15 per share Shares acquired via option exercise: 100,000 shares +4 more

7 metrics

Shares sold 100,000 shares Open-market sale of Personalis common stock on 2026-07-15

Weighted average sale price $15.15 per share Average price for the 100,000 shares sold, within a $15.01–$15.45 range

Shares acquired via option exercise 100,000 shares Common stock from exercised stock options on 2026-07-15

Option exercise price $2.44 per share Exercise price of stock option covering 100,000 shares

Shares held after transactions 173,880 shares Direct holdings of Personalis common stock by Richard Chen after transactions

Sale price range $15.01–$15.45 per share Range of individual prices for the 100,000 shares sold

Option expiration date May 24, 2027 Original expiration date of the exercised stock option grant

Key Terms

Rule 10b5-1 trading plan, weighted average price, Stock Option (right to buy)

3 terms

Rule 10b5-1 trading plan regulatory

"The sales and option exercise ... were effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"The price reported above reflects the weighted average price of the shares sold."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

Stock Option (right to buy) financial

"security_title: Stock Option (right to buy)"

FAQ

What insider stock transactions did Personalis (PSNL) President and CMO Richard Chen report?

Richard Chen reported an exercise-and-sale sequence involving 100,000 shares. He exercised stock options for 100,000 shares at $2.44 per share and sold 100,000 shares of common stock at a weighted average price of $15.15 per share.

At what prices did Richard Chen’s Personalis (PSNL) share sale occur?

Chen’s sale was reported at a weighted average price of $15.15 per share. According to the disclosure, the individual sale prices ranged from $15.01 to $15.45 per share, with full trade-by-trade details available upon request from appropriate parties.

How many Personalis (PSNL) shares does Richard Chen hold after these transactions?

After the reported transactions, Richard Chen holds 173,880 shares of Personalis common stock directly. This figure reflects his position following the exercise of 100,000 stock options and the open-market sale of 100,000 shares on the reported date.

Were Richard Chen’s Personalis (PSNL) transactions executed under a Rule 10b5-1 plan?

Yes. The sales and option exercise were carried out under a Rule 10b5-1 trading plan. The plan was adopted on December 23, 2025, indicating the trades were pre-arranged rather than discretionary market-timing decisions by Chen.

What stock option terms are disclosed for Richard Chen’s Personalis (PSNL) grant?

Chen exercised a fully vested stock option covering 100,000 shares of common stock at an exercise price of $2.44 per share. After this exercise, the option shows 0 shares remaining, and it had an original expiration date of May 24, 2027.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 07/15/2026 - 09:28 PM Accepted by SEC EDGAR 07/15/2026 - 09:27 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Chen Richard

(Last) (First) (Middle)

C/O PERSONALIS, INC.

6600 DUMBARTON CIRCLE

(Street)

FREMONT CALIFORNIA 94555

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Personalis, Inc. [ PSNL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and CMO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/15/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/15/2026		M(1)		100,000	A	$2.44	273,880	D
Common Stock	07/15/2026		S(1)		100,000	D	$15.15(2)	173,880	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to buy)	$2.44	07/15/2026		M(1)			100,000	(3)	05/24/2027	Common Stock	100,000	$0	0	D

Explanation of Responses:

1. The sales and option exercise reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 23, 2025.

2. The price reported above reflects the weighted average price of the shares sold. The sale price ranged from $15.01 to $15.45 per share. Upon request from the SEC staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

3. The shares subject to the option are fully vested and exercisable.

	/s/ Aaron Tachibana, Attorney-in-Fact	07/15/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)